128x64 display module graphic cob lcd — 128 x 64 graphic LCD modules in COB construction, stocked with KS0108 (or equivalent) or SBN0064G controllers so you can match the parallel bus and timing of an existing design. All builds carry a white LED backlight.
Specifications
| Model | MLG12864Y-9B, MLG12864Y-7B, MLG12864Y-5B (KS0108), MLG12864Y-4B (SBN0064G) |
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| Resolution | 128 x 64 dots |
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| Build | COB (chip on board) |
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| Driver IC | KS0108 or equivalent (MLG12864Y-9B / -7B / -5B), SBN0064G (MLG12864Y-4B) |
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| Interface | 8-bit parallel |
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| Drive method | 1/64 duty, 1/9 bias |
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| Backlight | White LED |
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Compare with nearby graphic LCD sizes
| Resolution | Driver IC | Build | Backlight |
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| 128 x 64 COG | ST7567 | COG | White LED (transmissive / transflective) |
| 128 x 64 COB | KS0108 / SBN0064G | COB | White LED |
| 128 x 128 | UC1617 | COG | White LED (transmissive / transflective) |
FAQ
Does the KS0108 module need a negative voltage for contrast?
Yes. KS0108 based COB modules are usually driven with a negative bias of roughly -5 to -10 V on the VO pin. Some modules generate it on board from the 5 V rail with a charge pump; if yours does not, a small DC-DC or a contrast trimmer between VEE and VSS is used.
Is there an Arduino library for the KS0108 display?
Yes. The KS0108 is one of the best supported monochrome controllers: openGLCD and u8g2 both ship a KS0108 driver, so text, fonts and bitmaps run on Arduino, ESP32 and STM32 without writing a driver from scratch. Check how many column drivers your module uses before wiring the chip select lines.
Can I replace an existing 128x64 COB display with yours?
Usually yes if the outline, pinout and controller match. Send us the datasheet of the module you are using and we will confirm pin compatibility and timing before you commit.
Is the 128x64 COB available with a COG equivalent?
The COG version in the 128 x 64 format is listed on the 128x64 chip on glass page. COG is thinner and runs at 3.3 V, but the pinout and the interface differ, so it is not a pin for pin swap for a COB module.
